24ec0d73b5
- introduce new call numbers, names, and field aliases; - initialize request messages to zero for all ABI calls; - format callnr.h in the same way as com.h; - redo call tables in both servers; - remove param.h namespace pollution in the servers; - make brk(2) go to VM directly, rather than through PM; - remove obsolete BRK, UTIME, and WAIT calls; - clean up path copying routine in VFS; - move remaining system calls from libminlib to libc; - correct some errno-related mistakes in libc routines. Change-Id: I2d8ec5d061cd7e0b30c51ffd77aa72ebf84e2565
75 lines
1.1 KiB
C
75 lines
1.1 KiB
C
#include "syslib.h"
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include <sys/ucred.h>
|
|
|
|
static pid_t
|
|
getepinfo(endpoint_t proc_ep, uid_t *uid, gid_t *gid)
|
|
{
|
|
message m;
|
|
int r;
|
|
|
|
memset(&m, 0, sizeof(m));
|
|
m.PM_GETEPINFO_ENDPT = proc_ep;
|
|
|
|
if ((r = _taskcall(PM_PROC_NR, PM_GETEPINFO, &m)) < 0)
|
|
return r;
|
|
|
|
if (uid != NULL)
|
|
*uid = m.PM_GETEPINFO_UID;
|
|
if (gid != NULL)
|
|
*gid = m.PM_GETEPINFO_GID;
|
|
return (pid_t) r;
|
|
}
|
|
|
|
pid_t
|
|
getnpid(endpoint_t proc_ep)
|
|
{
|
|
return getepinfo(proc_ep, NULL, NULL);
|
|
}
|
|
|
|
uid_t
|
|
getnuid(endpoint_t proc_ep)
|
|
{
|
|
uid_t uid;
|
|
int r;
|
|
|
|
if ((r = getepinfo(proc_ep, &uid, NULL)) < 0)
|
|
return (uid_t) r;
|
|
|
|
return uid;
|
|
}
|
|
|
|
gid_t
|
|
getngid(endpoint_t proc_ep)
|
|
{
|
|
gid_t gid;
|
|
int r;
|
|
|
|
if ((r = getepinfo(proc_ep, NULL, &gid)) < 0)
|
|
return (gid_t) r;
|
|
|
|
return gid;
|
|
}
|
|
|
|
int
|
|
getnucred(endpoint_t proc_ep, struct uucred *ucred)
|
|
{
|
|
uid_t uid;
|
|
gid_t gid;
|
|
int r;
|
|
|
|
if (ucred == NULL)
|
|
return EFAULT;
|
|
|
|
if ((r = getepinfo(proc_ep, &uid, &gid)) < 0)
|
|
return r;
|
|
|
|
/* Only two fields are used for now; ensure the rest is zeroed out. */
|
|
memset(ucred, 0, sizeof(struct uucred));
|
|
ucred->cr_uid = uid;
|
|
ucred->cr_gid = gid;
|
|
|
|
return r;
|
|
}
|